One or two long, hair-like structures called __________ extend from the surface of cells and help move the cell.
Fill in the blank(s) with the appropriate word(s).
Answer: Flagella
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Peroxisomes are examples of:
A. microbodies. B. ribosomes. C. chromosomes. D. nucleosomes. E. lysosomes.
Although Deinococcus-Thermus phyla stain Gram-positive, which reason(s) exclude them from this Gram type?
A. They lack teichoic acids. B. Their cell envelope includes an S-layer. C. They have L-ornithine in their peptidoglycan. D. Their plasma membrane has phosphatidylglycerol phospholipids instead of palmitoleic acids.
Cytotoxic T-cells
A. lack specificity for a target cell. B. secrete interleukin-2 to stimulate B and T-cells. C. stimulate B-cell proliferation. D. secrete granzymes and perforins that damage target cells. E. All of these choices are correct.
List and explain the five steps involved in DNA replication.
What will be an ideal response?